EP 1308970 A2 20030507 - Radial anisotropic sintered magnet production method
Title (en)
Radial anisotropic sintered magnet production method
Title (de)
Herstellungsverfahren eines gesinterten anisotropen Radialmagnets
Title (fr)
Procédé de fabrication d'un aimant radial fritté anisotropique
Publication
Application
Priority
- JP 2001334440 A 20011031
- JP 2001334441 A 20011031
- JP 2001334442 A 20011031
- JP 2001334443 A 20011031
Abstract (en)
A radial anisotropic sintered magnet formed into a cylindrical shape includes a portion oriented in directions tilted at an angle of 30 DEG or more from radial directions, the portion being contained in the magnet at a volume ratio in a range of 2% or more and 50% or less, and a portion oriented in radial directions or in directions tilted at an angle less than 30 DEG from radial directions, the portion being the rest of the total volume of the magnet. The radial anisotropic sintered magnet has excellent magnet characteristics without occurrence of cracks in the steps of sintering and cooling for aging, even if the magnet has a shape of a small ratio between an inner diameter and an outer diameter. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H01F 7/00 (2006.01); H01F 7/02 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP KR US)
H01F 7/00 (2013.01 - KR); H01F 7/0268 (2013.01 - EP US); H01F 41/0266 (2013.01 - EP US); H01F 41/028 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1308970 A2 20030507; EP 1308970 A3 20041229; EP 1308970 B1 20110511; CN 1302489 C 20070228; CN 1420504 A 20030528; EP 2063438 A1 20090527; EP 2063438 B1 20140226; EP 2063439 A1 20090527; EP 2063439 B1 20120307; KR 100891855 B1 20090408; KR 100891856 B1 20090408; KR 20030035852 A 20030509; KR 20080081888 A 20080910; KR 20080091070 A 20081009; TW I221297 B 20040921; US 2003118467 A1 20030626; US 2006024192 A1 20060202; US 2010019587 A1 20100128; US 6984270 B2 20060110; US 7618496 B2 20091117; US 7948135 B2 20110524
DOCDB simple family (application)
EP 02257551 A 20021031; CN 02148198 A 20021031; EP 09002987 A 20021031; EP 09002995 A 20021031; KR 20020054720 A 20020910; KR 20080082469 A 20080822; KR 20080094135 A 20080925; TW 91120751 A 20020911; US 22966005 A 20050920; US 28438402 A 20021031; US 57404609 A 20091006